ASP.NET Core Web API - How to use User.Claims in service layer

Question

Hello,

How can I use user claims in the service layer of my application? I can use it as follows in the controller but is there a way to use it in the service layer?

var userId = User.Claims.FirstOrDefault(x => x.Type == "UserId")?.Value;  

...

public class PalasServices : IPalasServices, IDisposable  
    {  
        private readonly UnitOfWork _unitOfWork;  
        private readonly IMapper _mapper;  
        private readonly IConfiguration _configuration;  
  
        public PalasServices(UnitOfWork unitOfWork, IMapper mapper, IConfiguration configuration)  
        {  
            _unitOfWork = unitOfWork;  
            _mapper = mapper;  
            _configuration = configuration;  
        }  
...  

Answer 1

Hi @Cenk ,

To access the HttpContext.User's claims from the service, you can try to use AddHttpContextAccessor service and IHttpContextAccessor.

In your application, register the AddHttpContextAccessor services in the Program.cs or Startup.cs file:

builder.Services.AddHttpContextAccessor();  
builder.Services.AddScoped<IPalasServices, PalasServices>();  

Then in the PalasServices service, refer to the following code to inject the IHttpContextAccessor, and then get the user claims:

public class PalasServices : IPalasServices   
{  
    private readonly IHttpContextAccessor _http;  
    public PalasServices(IHttpContextAccessor http)  
    {  
        _http = http;  
    }  
    public string GetCurrentUser()  
    {  
        return _http.HttpContext.User.Claims?.FirstOrDefault(x => x.Type == ClaimTypes.Name)?.Value;  
    }   
}  

The output as below:

More detail information, see Access HttpContext in ASP.NET Core.

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Best regards,
Dillion